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<title>pcre2_set_substitute_callout specification</title>
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<h1>pcre2_set_substitute_callout man page</h1>
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<h2>
SYNOPSIS
</h2>
<p>
<b>#include &#60;pcre2.h&#62;</b>
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<p>
<b>int pcre2_set_substitute_callout(pcre2_match_context *<i>mcontext</i>,</b>
<b>  int (*<i>callout_function</i>)(pcre2_substitute_callout_block *, void *),</b>
<b>  void *<i>callout_data</i>);</b>
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<h2>
DESCRIPTION
</h2>
<p>
This function sets the substitute callout fields in a match context (the first
argument). The second argument specifies a callout function, and the third
argument is an opaque data item that is passed to it. The result of this
function is always zero.
</p>
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<a href="pcre2api.html"><b>pcre2api</b></a>
page and a description of the POSIX API in the
<a href="pcre2posix.html"><b>pcre2posix</b></a>
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